---
title: "Maxicrop Seaweed Liquid Fertilizer — £29K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/home-garden/maxicrop-seaweed-liquid-fertilizer"
last_updated: "2026-08-01T03:15:04.122Z"
locale: en
meta:
description: "Niche score 46/100 · £29K/yr market · 15K searches/yr · £10.53 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 46/100 · £29K/yr market · 15K searches/yr · £10.53 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Maxicrop Seaweed Liquid Fertilizer — £29K/yr Amazon UK Niche (2026) - Flapen"
---
# **maxicrop seaweed liquid fertilizer**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 7Growth 93Conversion 99Competition 9Returns 100Price range 27Avg price 38Brand share 0Review moat 65Quality gap 28
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****19.2%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Great****+104.9%**
90-day search growth — must beat 0% to launch
**Review moat**
**Good****900.13**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Okay****£10.53**
avg listing price — sweet spot $15–$100
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Price range**
**Okay****£5.26–£18.61**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Bad****90%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****£29K**
£29K/yr · 15K searches
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Signals**[** Trending**](https://flapen.com/research/niches?market=uk&signal=trending "Search growth > 100% (90d)")
According to Flapen's Amazon United Kingdom niche tracking, maxicrop seaweed liquid fertilizer is a £29K/yr Amazon United Kingdom market (15K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Skip it — 46/100.
Data updated Jul 26, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **maxicrop seaweed liquid fertilizer market data**
- **Units sold / yr**
- **3K–3K**
- avg 100–250/product
- **Revenue / yr**
- **£26K–£32K**
- units × avg price
- **Conversion rate**
- **19.2%**
- **Avg BSR**
- **#68**
- **Page quality**
- **0%**
- **Prime**
- **88%**
- **Sponsored**
- **88%**
- **Out of stock**
- **3.5%**
- **Avg brand age**
- **68 months**
- **Avg seller age**
- **177 days**
## **Competition & brand share**
The top 5 products capture 90% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**1 **▼falling
**Sellers**
**36**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**90%**
Top 20: 100%
**Open market**
**0%**
- Maxicrop100%
## **Demand & seasonality**
Weekly Amazon search volume, last 62 weeks — +104.9% search growth over the last 90 days.
700500Spike '26 seasonJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 21.5×
[**Open Trend **](https://flapen.com/research/uk/home-garden/maxicrop-seaweed-liquid-fertilizer/trend)
## **Top maxicrop seaweed liquid fertilizer products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%£3K20%£6K30%£9K40%£12K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 8 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Maxicrop All Purpose Plant Growth Stimulant 1L - Natural Seaweed Based Liquid Biostimulant - Multivitamin Boost for All Garden Plants - Strong Roots - Healthy Growth - Builds Resilient Crops**Maxicrop**£6.44**4.5★1,029 rev](https://www.amazon.co.uk/dp/B000TAULWI) [2**Maxicrop All Purpose Plant Growth Stimulant 2.5L - Natural Seaweed Based Liquid Biostimulant - Multivitamin Boost for All Garden Plants - Strong Roots - Healthy Growth - Builds Resilient Crops**Maxicrop**£16.24**4.6★2,519 rev](https://www.amazon.co.uk/dp/B00719S168) [3**Maxicrop PPSI61L Sequestered Iron 1L - Iron Infused Natural Seaweed Extract - Protects Against Yellowing - Supports Growth In Difficult Soil Conditions - Plant Nutrition Blue**Maxicrop**£5.92**4.6★1,160 rev](https://www.amazon.co.uk/dp/B000TAT3W2) [4**Maxicrop XNATF61L All Purpose Organic Garden Natural Fertiliser 1L - All Purpose Organic Fertiliser - with Seaweed Extract - for Strong Growth and Healthy Root Development - Indoor and Garden Use**Maxicrop**£7.83**4.6★649 rev](https://www.amazon.co.uk/dp/B00CSM97V6) [5**Maxicrop POPGSYDL Original Seaweed Extract Organic Plant Growth Stimulant 500ML Concentrate Brown**Maxicrop**£5.26**4.6★120 rev](https://www.amazon.co.uk/dp/B002SPDGCY)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Maxicrop Original Seaweed Extract 2.5L**Maxicrop**£18.61**22 rev9y ago](https://www.amazon.co.uk/dp/B06XS5JWWZ) [**Maxicrop XOTNF61L Organic Tomato Natural Fertiliser 1L - Organic Tomato Plant Food - for Great Tasting Tomatoes - Added Seaweed Extract for Healthy Plant Growth - Growing Vegetables**Maxicrop**£10.14**392 rev12y ago](https://www.amazon.co.uk/dp/B00EAOTRUG) [**Maxicrop PMKLT4TL 2.5 Litre Moss Killer and Lawn Tonic - Green**Maxicrop**£13.79**1,310 rev13y ago](https://www.amazon.co.uk/dp/B000TAULYG) [**Maxicrop XNATF61L All Purpose Organic Garden Natural Fertiliser 1L - All Purpose Organic Fertiliser - with Seaweed Extract - for Strong Growth and Healthy Root Development - Indoor and Garden Use**Maxicrop**£7.83**649 rev14y ago](https://www.amazon.co.uk/dp/B00CSM97V6) [**Maxicrop All Purpose Plant Growth Stimulant 2.5L - Natural Seaweed Based Liquid Biostimulant - Multivitamin Boost for All Garden Plants - Strong Roots - Healthy Growth - Builds Resilient Crops**Maxicrop**£16.24**2,519 rev15y ago](https://www.amazon.co.uk/dp/B00719S168)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Maxicrop XOTNF61L Organic Tomato Natural Fertiliser 1L - Organic Tomato Plant Food - for Great Tasting Tomatoes - Added Seaweed Extract for Healthy Plant Growth - Growing Vegetables**Maxicrop**£10.14**4.5★**▲ 32%**](https://www.amazon.co.uk/dp/B00EAOTRUG) [**Maxicrop All Purpose Plant Growth Stimulant 1L - Natural Seaweed Based Liquid Biostimulant - Multivitamin Boost for All Garden Plants - Strong Roots - Healthy Growth - Builds Resilient Crops**Maxicrop**£6.44**4.5★**▲ 16%**](https://www.amazon.co.uk/dp/B000TAULWI) [**Maxicrop PMKLT4TL 2.5 Litre Moss Killer and Lawn Tonic - Green**Maxicrop**£13.79**4.4★**— 7%**](https://www.amazon.co.uk/dp/B000TAULYG) [**Maxicrop POPGSYDL Original Seaweed Extract Organic Plant Growth Stimulant 500ML Concentrate Brown**Maxicrop**£5.26**4.6★**— 3%**](https://www.amazon.co.uk/dp/B002SPDGCY) [**Maxicrop PPSI61L Sequestered Iron 1L - Iron Infused Natural Seaweed Extract - Protects Against Yellowing - Supports Growth In Difficult Soil Conditions - Plant Nutrition Blue**Maxicrop**£5.92**4.6★**— 0%**](https://www.amazon.co.uk/dp/B000TAT3W2)
**~~View all trending →~~**
## **What buyers say about maxicrop seaweed liquid fertilizer**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**30%
*“Really good gear”*
**Plant Growth**18%
*“I have taken on through the reviews that it really helps with plant growth”*
**Value For Money**18%
*“It is reasonably priced at Amzon”*
**Ease Of Use**7%
*“easy to use”*
**Pest/Insect Control**5%
*“Very Effective Moss Remover”*
**Functionality-Overall**5%
*“One bottle was just enough to do my lawn”*
**Advertised Vs Actual Product**3%
*“Everthing it claims to be”*
**Color**1%
*“The colour is a brown colour but is oderless”*
### **What buyers complain about **
**Functionality-Overall**11%
*“No working”*
**Leak-Proof**11%
*“Have had two spillages when cap appeared to be on tight”*
**Spray/Flow**6%
*“sprayed absolutely everywhere in my house”*
**Color**6%
*“miss beginning to go black”*
**Ease Of Cleaning**6%
*“Not easy to clean”*
**Value For Money**6%
*“more expensive than my usual plant feed”*
**Pest/Insect Control**6%
*“Killed all the moss except a light type”*
**Rusts/Corrodes**6%
*“Some contain iron which causes rust on your flags which is impossible to remove unless you spend stupid money on the right chemicals to remove it”*
**Ease Of Use**4%
*“Use sparingly, it's a bit pokey”*
**Moist/Dry**4%
*“day after I took ill for a week by time I got round to planting 5 of the 6 looked dried out and limp”*
### **Top return reasons **
**Leak-Proof**57%
**Contamination**9%
**Smell**5%
**Functionality-Overall**4%
**Advertised Vs Actual Product**4%
**Size-Overall**3%
**Mechanism Issues**3%
**Plant Growth**2%
**Quality-Overall**2%
**Defective Material/Parts**2%
## **Common questions**
- **Is maxicrop seaweed liquid fertilizer profitable to sell on Amazon United Kingdom?**
- The niche generates £29K/yr across 8 tracked products. 90-day search growth is +104.9%. Flapen's verdict: Skip it (46/100).
- **How competitive is the maxicrop seaweed liquid fertilizer niche?**
- 1 brands and 36 sellers compete. The top 5 products take 90% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in maxicrop seaweed liquid fertilizer?**
- Top complaints mined from reviews: Functionality-Overall, Leak-Proof, Spray/Flow. The return rate is 0.1%.
- **When does demand for maxicrop seaweed liquid fertilizer peak?**
- Demand peaks in Apr–May–Jun–Jul; the busiest month runs 21.5× the quietest.
- **What does it cost to enter the maxicrop seaweed liquid fertilizer niche?**
- Listings span £5.26–£18.61; the average listing price is £10.53 (sweet spot $15–$100). The average incumbent carries 900 reviews — the moat a new listing must climb.
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